3. Granuloma Annulare

Another condition that can produce ring-shaped marks is granuloma annulare.

Unlike ringworm, granuloma annulare isn't a fungal infection.

It can cause smooth, ring-shaped or circular areas made up of small bumps. The skin may be pink, reddish, brownish, or close to the child's normal skin color depending on the child's complexion.

Granuloma annulare can occur in children and may persist for months.

One clue that can distinguish it from ringworm is that granuloma annulare often doesn't have the prominent scaling and itching commonly associated with fungal infections.

However, appearance alone isn't always enough to distinguish the two.

A doctor or dermatologist may need to examine the lesion carefully.

4. Eczema and Other Forms of Dermatitis

Eczema can also create patches that become red, dry, itchy, and irritated.

Sometimes dermatitis can form roughly circular patches, making it look similar to a fungal infection.

Possible triggers include:

• Soaps
• Fragrances
• Detergents
• Sweat
• Clothing materials
• Skin-care products
• Environmental irritants

If the child frequently scratches the area, the skin can become increasingly inflamed.

This is another reason not to assume that every persistent rash is caused by fungus.

Treatment for eczema is different from treatment for a fungal infection, and using the wrong medication can sometimes make a fungal rash more difficult to recognize.

5. Why You Should Be Careful With Steroid Creams

One common mistake parents can make is applying a steroid cream to an unidentified circular rash.

Steroid creams can reduce redness and itching caused by inflammation.

But if the underlying problem is actually a fungal infection, steroids can sometimes change its appearance while allowing the fungus to continue growing.

This can produce what's sometimes called tinea incognito, in which the fungal infection becomes less typical in appearance because of steroid exposure.

That can make diagnosis more difficult.

For this reason, parents should avoid repeatedly treating an unexplained rash with prescription or potent steroid creams unless a healthcare professional has recommended them.

Could It Be Something More Serious?

Most childhood rashes are caused by relatively common skin conditions.

Nevertheless, persistent or worsening skin changes deserve appropriate evaluation.

A doctor may want to know:

• When the rash first appeared
• Whether it is itchy
• Whether it is painful
• Whether it has increased in size
• Whether new lesions have appeared
• Whether the child has fever
• Whether anyone else in the household has a similar rash
• Whether the child has contact with pets
• Whether new soaps, detergents, or skin products were introduced

These details can help narrow down the possibilities.

Don't Forget About Pets

If a fungal infection is suspected, household animals can sometimes be relevant.

Cats and dogs can carry certain dermatophytes and may occasionally transmit them to humans.

An animal doesn't necessarily have to look obviously sick.

Some infected pets may have small areas of hair loss, scaling, crusting, or irritated skin, while others may have few noticeable symptoms.

If a child develops a suspected fungal infection and there are pets in the home, it's worth mentioning this to the healthcare professional.